TBS Crossfire Manual

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CLI commands
Rf mode dynamic or forced 50Hz:
set osd_link_quality_alarm = 70
set osd_rssi_dbm_alarm = -100
Rf mode forced 150Hz:
set osd_link_quality_alarm = 40
set osd_rssi_dbm_alarm = -100
Signal strength in INav
In INAV it’s almost the same as with the old BetaFlight methode, except that you don’t need to assign LQ to
a channel in the channel map menu.
INav reads the LQ from the CRSf stream and outputs it automatically on Channel 17 (from INav).
Link States
LQ
Link quality
The number of packages that arrive correctly. If the number starts to drop, more packages are lost.
In the TBS OSD’s the LQ is scaled from 0-300%:
● 0-100%: 50/4 Hz mode
● 170-300%: 150Hz mode
If you use LQ as sensor by the channel/ output map menu or as OpenTx telemetry sensor, it behaves like
this:
● 150Hz mode: 100%
● 50/4Hz mode: 0-100%
RSSI
Relative signal strength indicator
How “loud” the signal is, that the receiver “hears”. But this also includes noise.
The RSSI is exponential which results in a massive drop at the beginning and slows down the lower it gets.
In general: double the range will result in a drop of -6dBm. An example:
● RSSI at 0m = -10dBm
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